EP3593034A1 - Dispositif d'éclairage conçu pour un véhicule automobile - Google Patents

Dispositif d'éclairage conçu pour un véhicule automobile

Info

Publication number
EP3593034A1
EP3593034A1 EP18708072.6A EP18708072A EP3593034A1 EP 3593034 A1 EP3593034 A1 EP 3593034A1 EP 18708072 A EP18708072 A EP 18708072A EP 3593034 A1 EP3593034 A1 EP 3593034A1
Authority
EP
European Patent Office
Prior art keywords
lighting device
holographic
laser light
light
motor vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18708072.6A
Other languages
German (de)
English (en)
Inventor
Helmut Erdl
Abdelmalek Hanafi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3593034A1 publication Critical patent/EP3593034A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/50—Projected symbol or information, e.g. onto the road or car body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/60—Projection of signs from lighting devices, e.g. symbols or information being projected onto the road
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2202—Reconstruction geometries or arrangements

Definitions

  • the invention relates to a lighting device for a motor vehicle and a corresponding motor vehicle.
  • the object of the invention is therefore to provide a lighting device for a motor vehicle with a light module with which a well-perceptible symbolism can be generated at a greater distance from the motor vehicle.
  • the lighting device according to the invention is intended for a motor vehicle, in particular a car and possibly also a truck.
  • the lighting device comprises a light module, which will be described in more detail below.
  • the lighting device may also have a plurality of such light modules.
  • the light module includes a laser light source for generating laser light, wherein the laser light source comprises one or more laser diodes.
  • the power of the respective laser diodes is preferably between 200 mW and 300 mW, but may possibly be higher and be up to 3 to 4 watts.
  • the laser light source generates one or more collimated beams of laser light.
  • the light module of the illumination device includes an optical device to which the laser light generated with the laser light source falls and which is designed such that it generates a predetermined symbolism in the environment of the motor vehicle, preferably on the ground, during operation of the lighting device in the motor vehicle.
  • the optical device comprises one or more holographic-optical elements, which are substantially non-absorbing for the laser light and which are adapted to cause the generation of the predetermined symbolism of an interference of the laser light by the phase modulation.
  • non-absorbing is understood to mean that the laser light after passing through the holographic-optical elements, an intensity of 95% or more and in particular of 99% or more and more preferably of 100% compared to the intensity before passing the holographic-optical element (s).
  • the holographic-optical elements may each be reflective or transmissive elements.
  • the symbolism is to be understood as being one or more symbols perceptible by a human being.
  • the symbols are perceptible by the driver or an occupant of the motor vehicle or other road users in the environment of the motor vehicle.
  • the symbolism comprises one or more arrows and / or one or more lines.
  • the symbolism may include one or more white and / or one or more colored symbols.
  • the light module can also be installed in a headlight of the motor vehicle. If the symbolism is superimposed with the headlight of the motor vehicle, it is so bright that it is still visible in the headlight.
  • the light module of the lighting device according to the invention further comprises an actuator for moving at least a part of the light module, the actuator system comprising one or more actuators for this movement.
  • the control unit with which the actuators are controlled during operation of the lighting device such that the position of the predetermined symbolism relative to the motor vehicle and / or the shape of the predetermined symbolism are changed by means of the actuators.
  • the change in the position or form of the symbolism does not have to be permanent in the operation of the lighting device, but can be coupled to a specific operating mode or other conditions.
  • the control device is further configured such that it controls the switching on and off of the light module. If a plurality of light modules are provided in the lighting device, these light modules can optionally use a single common control device for controlling their actuators.
  • the invention is characterized in that a dynamic symbolism is generated in a lighting device for a motor vehicle by means of phase modulating holographic optical elements.
  • holographic-optical elements are known per se and are characterized in that the structures for deflecting the light are in the range of its wavelength, so that diffraction effects occur. According to the invention, it is ensured that the laser light is coherent when passing through the holographic-optical elements, so that the light can interfere.
  • the illumination device has the advantage that the use of phase-modulating holographic-optical elements in combination with a controlled actuator in a simple manner a dynamized light function is created via a symbol that changes their relative position to the motor vehicle or its shape. As a result, the symbolism is very well perceived. In addition, a sufficient brightness of the symbolism is ensured, since the holographic optical elements for the laser light are substantially non-absorbing.
  • the holographic-optical element (s) comprise one or more known diffractive optical elements.
  • the total area of the holographic-optical elements in plan view is between 100 mm 2 and 900 mm 2 , in particular between 300 mm 2 and 600 mm 2 .
  • the light module is configured such that the laser light of the laser light source is directed to the optical device with the interposition of one or more optical fibers, thereby enabling a flexible installation of the light module in the lighting device. Nevertheless, it is also possible that the laser light is directed to the optical device without the interposition of such optical fibers.
  • the lighting device comprises a light device in addition to the light module in order to generate a predetermined light distribution in addition to the symbolism.
  • the generation of the symbolism occurs simultaneously with the generation of the predetermined light distribution.
  • the lighting device is preferably a headlight or comprises a headlight, in which case the lighting device is set up to generate a low beam and / or high beam distribution as predetermined light distribution.
  • the lighting device may comprise a vehicle signal light, such as e.g. a tail light and / or a brake light includes.
  • the lighting device is set up to generate a light signal as a predetermined light distribution.
  • the predetermined symbolism is superimposed on the predetermined light distribution when the light device is switched on and the light module is switched on.
  • the symbolism is thus designed so that it is visible in spite of the additional light distribution and stands out from it.
  • the lighting device is a headlight that emits white spotlight
  • the symbolism preferably also has a white color.
  • the illumination device emits monochromatic light preferably, the color of the symbolism also corresponds to the color of this light.
  • the lighting device according to the invention is designed such that the light module can be switched on only when the lighting device is switched on, which can be achieved with the control device in the lighting device according to the invention. Also with this variant appropriate legal requirements are considered.
  • the optical device comprises at least one mirror on which the laser light falls after passing the holographic-optical elements, wherein the at least one mirror by means of at least one predetermined actuator of the actuator via the control by the control device movable is.
  • the movement of the mirror achieves the change in the shape or position of the symbolism.
  • the at least one predetermined actuator is adapted to perform an oscillating movement during operation of the lighting device, wherein the path of the oscillating movement describes the shape of the predetermined symbolism. It is thus traversed with an oscillating scan movement a pattern that corresponds to the shape of the predetermined symbolism.
  • the frequency of the oscillating movement is preferably so great that the movement is no longer perceptible by the human eye.
  • the path and / or the speed of the oscillating movement of the at least one mirror is freely adjustable. In this sense, the mirror forms a vector scanner, which unlike conventional scanners can run any pattern. In this way, the form of the given symbolism can be adapted very flexibly.
  • At least one predetermined actuator of the actuator system is provided such that, during operation of the lighting device via the control by the control device, a relative movement, preferably an oscillating relative movement, between the or the holographic-optical elements and the laser light before passing through the holographic-optical elements, whereby different holographic-optical structures which are part of the holographic-optical elements or are alternately irradiated. Thereby, the effect of a moving symbol or a change between different symbols can be achieved.
  • only the one or more holographic-optical elements or exclusively the laser light source or both the holographic-optical elements and the laser light source are movable with the at least one predetermined actuator.
  • the laser light source is an RGB laser light source, which as laser diodes a number (ie one or more) of red laser diodes, a number (ie one or more) of green laser diodes and a number (ie, one or more) of blue laser diodes.
  • RGB laser light source As wavelength for the light of the individual laser diodes, the wavelengths commonly used in RGB light systems are used.
  • the red laser light has a wavelength between 610 nm and 760 nm
  • the green laser light has a wavelength between 500 nm and 750 nm
  • the blue laser light has a wavelength between 450 nm and 500 nm.
  • the number of red laser diodes is associated with a first holographic optical structure to which (preferably exclusively) the red laser light of the number of red laser diodes falls, whereas the number of green laser diodes has a second holographic optical structure is assigned to which (preferably exclusively) the green laser light of the number of green laser diodes falls.
  • the number of blue laser diodes is associated with a third holographic-optical structure on which (preferably exclusively) the blue laser light of the number of blue laser diodes falls.
  • the first, second and third holographic-optical structure are part of the holographic-optical elements.
  • the light module is designed in such a way that the red, green and blue laser light is superimposed after passing through the first, second and third holographic-optical structure, thereby generating the symbolism in white light.
  • each laser diode is preferably a plurality of corresponding first and second and third holographic-optical structures, respectively associated, wherein the laser light of the respective laser diode simultaneously between different first or second or third holographic-optical structures changes.
  • the optical device comprises, in addition to the holographic-optical element or elements, one or more further optical elements which follow the holographic-optical elements in the beam path of the laser light, in particular one or more lenses and / or mirrors ,
  • the control device is configured to receive information from an environmental sensor system and / or a navigation system of the motor vehicle and to actuate the actuators in dependence on this information.
  • the environment sensor system it can be e.g. be a camera-based sensors or possibly even a radar and / or Lidar sensor or a combination of different sensors.
  • control device is configured in such a way that it derives the road course from the motor vehicle information and adapts the shape of the predefined symbolism to the road course, wherein the predefined symbolism preferably comprises one or more lines whose Shape is adapted to the curvature of the road course.
  • This variant of the invention is preferably combined with the above-described oscillating mirror, in which the path of the oscillating movement describes the shape of the predetermined symbolism.
  • control device is designed such that it is based on the information of the navigation system as a predetermined symbolism outputs a turn-off indication when the motor vehicle approaches a branch on a navigation route along which the navigation system is currently navigating.
  • the turn signal indicates the continuation of the navigation route.
  • the turn-off instruction is arranged at the location of the branch and this position is maintained when the motor vehicle approaches.
  • the turn-off thus changes its relative position to the motor vehicle, but remains static for the driver of the motor vehicle at the junction stand. As a result, the driver of the motor vehicle is given a navigation hint very intuitively when approaching the turn-off.
  • control device is configured such that the light module is switched on when one or more objects, preferably one or more objects at a minimum distance from the motor vehicle, are detected by the environmental sensor.
  • the lighting device can be used in particular in combination with a driver assistance system of the motor vehicle.
  • the symbolism may be e.g. indicate the width of the roadway by means of lines in front of the motor vehicle.
  • a collision warning can be displayed by means of the symbolism, which warns the occupants of the motor vehicle or the other road users when falling below a distance to other road users.
  • the invention relates to a motor vehicle, which comprises one or more of these lighting devices.
  • this may be a manually controlled motor vehicle, but possibly also an autonomously driving motor vehicle.
  • the symbolism is primarily used to warn or warn other road users in the vicinity of the autonomously driving motor vehicle.
  • FIG. 1 is a schematic representation showing a first variant of a light module in a lighting device according to the invention
  • Fig. 2 is a schematic representation showing a second variant of a
  • Light module in a lighting device according to the invention shows
  • FIGS. 3 and 4 show top views of motor vehicles with the lighting device according to the invention, wherein the generation of different symbolics is illustrated.
  • a lighting device in the form of a headlight of a motor vehicle.
  • the headlight includes in a conventional manner a lighting device with which the low beam and the high beam is generated, this light device is not shown in the figures.
  • a light module is installed in the headlight, which can generate a certain symbolism on the road in front of the motor vehicle parallel to the low beam or high beam.
  • Fig. 1 shows a first variant of such a light module.
  • the light module is designated as a whole by reference numeral 10 and comprises in the embodiment described here a laser light source 1 with three laser diodes 101, 102 and 103 and three collimator lenses 3, 3 'and 3 ".
  • the laser diode 102 is a green laser diode and the laser diode 103 is a blue laser diode
  • the light of the respective laser diodes is indicated by arrows emanating from these diodes
  • the laser light of the individual diodes is first collimated by the collimator lenses 3, 3 'and 3 " ,
  • the collimator lens 3 collimates the red laser light of the laser diode 101, the collimator lens 3 'the green laser light of the laser diode 102 and the collimator lens 3 "the blue laser light of the laser diode 103.
  • the collimated laser light beam then fall on the only schematically indicated transmissive holographic optical element.
  • a phase modulation and an interference of the incident laser beams is effected.
  • a single continuous holographic-optical element 2 is used, which has corresponding holographic-optical structures 201, 202, and 203 for the different laser light bundles.
  • the red laser light beam is incident on the holographic-optical structure 201, the green laser light bundle on the holographic-optical structure 202, and the blue laser light bundle on the holographic-optical structure 203.
  • the red laser light beam is after passing through the structure 201 with reference L
  • the light bundles L, L 'and L "initially fall on a tiltable mirror 5, wherein the tilting movement is indicated schematically by two double arrows DP
  • an actuator 6 is used which is only schematically indicated In such a component, the mirror and the actuator are integrated in a common chip
  • the actuator 6 is actuated via a control device 7, which is only indicated schematically, ie, the actuator moves the mirror 5 in response to corresponding control signals of the control device 7.
  • the mirror 5 in combination with the actuator 6 and the control device 7 forms a vector scanner, which can perform an oscillating movement of the mirror, the shape of the oscillating movement and its speed as desired
  • the vector scanner can It can also perform slow continuous movements and assume any tilting positions in the context of the possible tilting of the mirror.
  • the laser light beams L, L 'and L "reflected on the mirror 5 are thrown onto the road 4 in front of the motor vehicle.
  • the structures 201 to 203 of the holographic-optical element 2 are designed such that the individual light beams L, L 'and L "produce the same symbolism at the same location on the road 4, so that at this point a superimposed symbol SY in white
  • the brightness of the symbolism is greater than the brightness of the driving or high beam, so that the symbolism of the low beam and high beam stands out and thus becomes visible to the driver of the motor vehicle or other road users 1 is the phase-modulated La- serlicht, which is reflected by the mirror 5, thrown directly onto the street 4.
  • other optical elements such as one or more lenses, may be provided.
  • the symbology SY can be positioned at different locations, thereby producing dynamic lighting effects.
  • the symbolism can also be generated by a predetermined scanning movement of the three superimposed light beams L, L 'and L ", whereby, given a sufficient oscillation frequency, the movement of the light beams through the human eye can no longer be perceived whose curvature can be suitably adjusted by changing the scanning movement of the mirror 5.
  • a symbolism generated by means of a scanning movement is shown in FIG.
  • the structure of the laser light source 1 with corresponding laser diodes 101 to 103 and collimator lenses 3 'to 3 "corresponds to the laser light source of FIG. 1, so that reference is made to the explanations there
  • the holographic-optical element 2 is now formed not only from three holographic-optical structures 201 to 203, but from a matrix of a total of 15 holographic-optical structures, wherein the holographic-optical
  • the matrix-shaped holographic-optical element contains in the first row five holographic-optical structures 201, which differ from one another and can only be illuminated by the laser light of the red laser diode 101.
  • the second row of the matrix comprises the five holographically -opt structures 202 which are illuminated only by the green laser diode 102 and differ from one another.
  • the bottom line of the matrix comprises the five holographic-optical structures 203, which differ from one another and can only be illuminated by the blue laser diode 103.
  • only a few holographic-optical structures are designated by the reference symbols 201, 202 and 203.
  • the holographic-optical element 2 is movable by means of a corresponding actuator 6, which in turn can be controlled via a control device 7. In this case, the holographic-optical element 2 can be displaced in the horizontal direction, as indicated by the arrow P '.
  • the laser light source can illuminate different columns of holographic-optical structures 201 to 203.
  • a phase modulation of the three laser light colors is effected, whereupon the red laser light beam L, the green laser light beam L 'and the blue laser light beam L "are directed to a common location on the road 4 and there to a 2, this overlay is indicated by way of example for illuminating the left column of the holographic-optical structures 201 to 203 and the fourth column from the left of the holographic-optical structures
  • the holographic-optical structures of the individual columns produce each the same symbolism SY, but with different position on the road 4.
  • a switching back and forth of the symbol SY between different positions on the road 4 in front of the motor vehicle can be achieved.
  • a periodic movement of the holographic-optical element 2 can also be carried out, so that a continuous change in the position of the symbolism on the road is achieved, as a result of which the symbolism is better perceived by the driver or other road users.
  • a relative movement between the laser light source 1 and the holographic-optical element 2 was generated only by the movement of the holographic-optical element. Nevertheless, it is also possible for this relative movement to be generated exclusively by the movement of the laser light source 1 or by simultaneous movement of the laser light source 1 and the holographic-optical element 2 via another actuator or further actuators.
  • FIGS. 3 and 4 illustrate which types of symbols can be generated by means of the lighting device according to the invention.
  • Both figures show different plan views of a motor vehicle 8, which runs on a lane on a roadway on a right lane. The direction of travel is in Fig. 3 and Fig. 4, the upward direction.
  • the right-hand edge of the road is designated by reference FR, the left-hand edge with reference number FL and the center strip with reference number ML.
  • the individual generated symbols are generated by an inventive light module in the left front headlight and a light module according to the invention in the right front headlight of the motor vehicle 8.
  • Fig. 3 shows the generation of a symbolism in the form of two solid lines LI.
  • This symbolism is generated by means of the scanning light module of FIG. 1, wherein the shape of the lines is given by the scanning movement of the scanning mirror.
  • the lines LI depict the course of the road ahead of the motor vehicle.
  • the control device of the corresponding light modules receives sensor signals from an environmental sensor system of the motor vehicle 8, which detects the future road course of the motor vehicle.
  • the surroundings sensor is preferably a camera-based sensor.
  • the two lines LI are then generated in such a way that they follow the future roadway course. Since the road course in Fig. 3 is curved, this also leads to the reproduction of curved lines.
  • FIG. 4 shows a scenario in which a turn-off arrow P at a branch AB on the roadway is reproduced as a symbol.
  • This arrow is preferably also generated by the light module of FIG. 1, in which case the mirror does not oscillate, but slowly changes its tilt position.
  • the arrow P corresponds to the symbolism resulting from the superposition of the three laser light bundles L, L 'and L "of Fig. 1.
  • the light of the two headlights is also shown in Fig. 4 and denoted by corresponding reference symbols SL.
  • the control device of the corresponding light modules receives from the navigation system of the motor vehicle 8 information about the currently set navigation route and the position of the motor vehicle on this route.
  • the control system it is recognized by the control system that the motor vehicle approaches the branch AB and at the junction the journey according to the navigation route should be continued to the right.
  • the arrow P is generated to the right at the position of the branch AB.
  • this arrow is kept constant by means of the actuators in the light module at this position.
  • a relative movement between arrow P and motor vehicle 8 becomes art carried out that the arrow P remains at the location of the branch AB until the vehicle reaches the junction. In this way, the driver of the motor vehicle is intuitively taught when approaching the branch, in which direction he has to drive at the junction.
  • a predetermined symbolism is generated in a simple manner by means of one or more non-absorbing holographic-optical elements by a motor vehicle lighting device in the environment of the motor vehicle.
  • the holographic-optical elements cause a phase modulation without reducing the light amplitude by absorption, so that as far as possible no light losses occur.
  • a laser light source By means of a laser light source, a sufficient brightness of the symbolism is ensured.
  • an actuator and a control device a dynamization of the symbolism is achieved in that the symbolism can change its shape and / or position.
  • the generation of the symbolism is coupled to information from a navigation system or an environmental sensor system. By using information from a navigation system, dynamic turn-by-turn instructions can be given to the driver, for example.
  • information of an environmental sensor system for example, the road course in front of the motor vehicle can be displayed via the symbolism.

Abstract

L'invention concerne un dispositif d'éclairage conçu pour un véhicule automobile (8) comportant un module d'éclairage (10), ce module d'éclairage (10) comprenant : une source de lumière laser (1) conçue pour générer une lumière laser (L, L', L''), cette source de lumière laser (1) comprenant une ou plusieurs diodes laser (101, 102, 103) ; un système optique sur lequel la lumière laser (L, L', L'') est incidente et qui est conçu de manière à générer un symbole (SY) prédéfini dans l'environnement du véhicule automobile (8), ce système optique comprenant un ou plusieurs éléments optiques holographiques (2) qui n'absorbent sensiblement pas la lumière laser (L, L', L'') et qui sont conçus pour induire une interférence de la lumière laser (L, L', L'') par modulation de phase pour générer le symbole (SY) prédéfini ; un système d'actionnement servant à déplacer au moins une partie du module d'éclairage (10), ce système d'actionnement comprenant un ou plusieurs actionneurs (6), et ; un système de commande (7) servant à commander le système d'actionnement pendant le fonctionnement du dispositif d'éclairage, de manière que ce système d'actionnement puisse modifier la position du symbole (SY) prédéfini par rapport au véhicule automobile (8) et/ou la forme de ce symbole (SY) prédéfini.
EP18708072.6A 2017-03-09 2018-02-20 Dispositif d'éclairage conçu pour un véhicule automobile Withdrawn EP3593034A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017203891.8A DE102017203891A1 (de) 2017-03-09 2017-03-09 Beleuchtungsvorrichtung für ein Kraftfahrzeug
PCT/EP2018/054131 WO2018162223A1 (fr) 2017-03-09 2018-02-20 Dispositif d'éclairage conçu pour un véhicule automobile

Publications (1)

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EP3593034A1 true EP3593034A1 (fr) 2020-01-15

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EP18708072.6A Withdrawn EP3593034A1 (fr) 2017-03-09 2018-02-20 Dispositif d'éclairage conçu pour un véhicule automobile

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US (1) US20190285239A1 (fr)
EP (1) EP3593034A1 (fr)
CN (1) CN110073140A (fr)
DE (1) DE102017203891A1 (fr)
WO (1) WO2018162223A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017203889A1 (de) * 2017-03-09 2018-09-13 Bayerische Motoren Werke Aktiengesellschaft Beleuchtungsvorrichtung für ein Kraftfahrzeug
WO2019156244A1 (fr) * 2018-02-09 2019-08-15 大日本印刷株式会社 Dispositif d'éclairage, son procédé de conception et dispositif de conception
DE102018216254A1 (de) * 2018-09-24 2020-03-26 Bayerische Motoren Werke Aktiengesellschaft Kraftfahrzeug
JP7370805B2 (ja) * 2018-10-26 2023-10-30 株式会社小糸製作所 車両の路面描画装置。
DE102018219604A1 (de) * 2018-11-15 2020-05-20 Robert Bosch Gmbh Verfahren und Steuereinheit zum Einstellen einer Leuchtweite von zumindest einem Scheinwerfer eines Fahrzeugs
DE102019207706B4 (de) 2019-05-27 2023-04-20 Audi Ag Fahrzeugscheinwerfer sowie Kraftfahrzeug mit einem Fahrzeugscheinwerfer
DE102021130490A1 (de) 2021-11-22 2023-05-25 HELLA GmbH & Co. KGaA Ansteuervorrichtung, Scheinwerfer und Projektionsverfahren

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006050546B4 (de) 2006-10-26 2020-07-23 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Informationsdarstellung
DE102006050547A1 (de) 2006-10-26 2008-04-30 Bayerische Motoren Werke Ag Verfahren zur Informationsdarstellung
DE102006050548B4 (de) 2006-10-26 2014-05-08 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Warnung anderer Verkehrsteilnehmer
KR20100017517A (ko) * 2007-05-01 2010-02-16 코닌클리즈케 필립스 일렉트로닉스 엔.브이. 광 빔 및 홀로그래픽 3ｄ 이미지를 생성하기 위한 차 조명 유닛
DE102011119923A1 (de) * 2011-11-28 2013-05-29 Son Hao Vu Beleuchtungssystem
JP6344545B2 (ja) * 2014-01-14 2018-06-20 大日本印刷株式会社 表示装置及び表示装置が搭載された車両
CN107107807B (zh) * 2014-11-07 2021-03-19 大日本印刷株式会社 照明装置
JP6108140B2 (ja) * 2014-11-07 2017-04-05 大日本印刷株式会社 光学装置
DE102014223933A1 (de) 2014-11-25 2016-05-25 Robert Bosch Gmbh Scheinwerfermodul
DE102015003527A1 (de) 2015-03-18 2016-09-22 Audi Ag Kraftfahrzeug mit optischer Anzeige für den Außenbereich
US9766454B2 (en) * 2015-08-04 2017-09-19 GM Global Technology Operations LLC Dual output headlight system for a vehicle

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DE102017203891A1 (de) 2018-09-13
WO2018162223A1 (fr) 2018-09-13
CN110073140A (zh) 2019-07-30
US20190285239A1 (en) 2019-09-19

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